Hey Rokslide, New here. Have a question about arrow spine. I am looking to buy some easton axis arrows, I have looked at easons chart and im right on the edge of 340 and 300. My current set up is pro defiant @ 65lbs and 27 DL. I am currently shooting a 340 fmj with no weight up front and 100g broadhead which tunes good out of my setup. I would like to get the axis and ad 50-75 up front and continue running 100gr broadhead. Which spine is right for this setup? Any help is appreciated.